Introduction - Page 1 of 1
Introduction, and Getting Started Printable Version
(Clifton Park Boulevard) is a major multi-lane
arterial in Clifton Park, New York. It serves trips to and from
three major shopping centers, a local school district campus, and many
commercial and residential areas. Route 146 also connects these areas
to Interstate 87 (the Northway) for trips toward Albany and Montreal.
Route 146 is the main
street for the town. Shopping centers on either side are the
downtown. Route 146 is also a major link between Schenectady on
the west and Mechanicville on the east. Exhibit 2-1 shows the section of
Route 146 that is the focus of this case study.
Much vacant land south of
intersection C (Maxell Road) is still available for development, as is
evident in Exhibit 2-2. As development occurs, traffic impacts will result.
Geometric and operational changes will be needed to maintain acceptable
operations at roadway intersections. At a minimum, the
northbound approach will have to be added at intersection C, but there
will be other improvements as well.
We have been tasked
with determining what those geometric and operational changes should be.
We’re going to do a generic traffic impact analysis (TIA) for
this corridor. As is common in TIA’s, we are going to focus on three conditions (the AM peak hour, the PM peak hour,
peak hour of the generator, with the implicit assumption, at least
initially, that the last is
one of the former two) for existing and future conditions. Moreover, for
the future conditions, we’re going to examine the network’s
performance with and without the development.
We are not going to present the entire
TIA, just portions of it. We’re going to use the TIA setting
as a backdrop against which to illustrate use of the HCM analysis
procedures. Consequently, we’re going to focus on specific intersections
and conditions to illustrate specific types of analyses and issues.
to Getting Started